Machine for making shingles



June 5, 1923.

S. M.. FORD MACHINE FOR MAKING SHINGLES Filed Au 2 1919 2 SQeets-Sheet 1 /z 5 illlllllli lllllllnl Jaw/W? d2 June 5, 1923. 1,457,662

S. M. FORD MACHINE FQR MAKING SHINGLES 2 Sheets-Sheet 2 Filed Aug. 2, 1919 Patented June 5, 1923.

F E Q SILAS M. FORD, OF ST. PAUL, MINNESOTA.

MACHiINE FOR MAKING SHINGLES.

Application filed August 2, 1919. Serial No. 315,082.

To all whom it may concern:

Be it known that I, SILAS M. Fono, a citizen of the United States, and a resident of St. Paul, in the county of Ramsey and State of Minnesota, have invented certain new and useful Improvements in a Machine for Making Shingles, of which the following is a specification.

This invention relates to improvements in a machine for making shingles and partlcularly to improvements in that type of machine disclosed in the application for patent of Henry Wulif, Serial No. 247,339, filed July 29, 1918, for machine and method for 16 making shingles.

One object of my invention is to provide in such a machine improved means for looking together the co-operating die bars during that portion of their travel wherein the dies are operated.

Another object is to provide in such a machine an improved form of bar to facilitate the meeting of the co-operating bars.

Another object is to provide an improved 2 offset form of chain mechanism to facilitate the handling of the fibre through the machine.

With these and incidental objects in view, the invention consists of certain novel features of construction and combination of parts, the essential elements of which are hereinafter described with reference to the drawings which accompany and form a part of this specification.

In the drawing, Figure 1 is a side view of my im roved machine; Figure 2 is a plan view of t e same; Figure 3 is a front view of my improved form of lock block; Figure 4 is a side view of the same; Figure 5 is a fragmentary plan view of one end of one of the lower bars, showing the lock block in position; Figure 6 is a section taken on the line 6-6, Figure 2; Figure 7 is an enlarged conventional detail showing the manner in which the lock block is controlled by the cam; and Figure 8 is a section taken on the line 8-8, Figure 2.

The general construction and operation of the machine is the same as that described in the application aforesaid and as no claims on any of the general features are made herein a detailed description of the general operation is omitted.

Each of the die bars 12 and 13, Figures 1, 2, and 8, is supported on a pair of link members 2, forming with the pin 3 of the chain a chain roller link member.

The bar is cut off at 4 on the one side, while the other side is left square, and looking at Figure 1 it will be seen that with the 0 upper chain travelling in the direction of the arrow 5 the cut off portion of the block allows the bar to remain in a horizontal position as it passes the imaginary vertical plane which contains the axis of the sprocket a5 6 at 7, thereby allowing the lock blocks to readily clear the locking members, as will be hereinafter described.

Similarly, on the lower chain as the blocks approach the imaginary vertical plane which contains the axis of the sprocket 9 the cut away portion allows the bar to come to a horizontal position slightly before the center line of the sprocket wheel is reached to facilitate the entering of the block into its 00- operating member.

The bars 10 and 11 of the upper and lower chains, respectively, are cut off as shown in Figures 1 and 2, to better illustrate the operation of this feature. so

The bars 12 and 13 are provided at their ends with T-slots 15. In each of these slots 15 of the lower set, there fits a sliding block 17, as shown in detail in Figure 5, and which is adaptable to work into and out of the T- slots of the upper set. Block 17, see Figure 4, is provided with elongated grooves 18 and side-wise extended locks 19, screws 20 and the grooves 18 permit a limited sliding movement of the block 17 in their respective T-slots, the function of the locks 19 being to enter into the cam grooves between cam plates 21 whereby the block -17 is given the required reciprocating movement.

A double-faced cam 21, Figures 6 and 7,

is carried on each side of the frame of the machine and the ears 17 enter this cam at 22, Figure 2, and when they reach the point 23 the lock block is slid upwardly in its .T slot and engages with the T slot in the cooperating bar of the upper set so that when it has reached the point 24 these two bars are securely locked together at each end.

The bars travel in this locked condition to the point 25 and during this travel all of the operating mechanism of the dies is completed. From the point 25 to the point 26 the cam acts to withdraw the lock blocks from the bars, and beyond this point the upper and lower bars are disengaged from each other so they may pass around their respective sprocket wheels.

I have determined through experiment and practical trial that a rigid, positive form of locking the bars together is essential for the successful commercial working of such a machine, and the particular type of locking device herein described accomplishes the work in the best of style.

It will be noted that the shafts 26 and 27 carrying the lower sprocket wheels are set to the left of the shafts 28 and 29 of the sprocket wheels,

This allows the chain of the upper sprocket to pass downwardly toward the sheet of felt or fiber 30 and come in contact therewith before the lower bars reach the paper so that when the lower bars reach the paper the Y come against the upper bars already travel linig in a horizontal position.

ikewise at the other end of the machine the upper bars in leaving the paper swing away from the lower horizontal bars while these lower bars are still travelling in a horizontal direction. As the upper and lower bars have their portions 4 cut away on reverse sides, they are unable to swing to and from their respective horizontal travelling, co-operating bars, and meet the bars in the best possible manner.

While I have described my invention and illustrated it in one particular design, I do not wish it understood that I limit myself to this construction, as it is evident that the application of the invention may be varied in many ways within the scope of the following claims:

1. In a machine for making shingles through the operation of dies carried in die bars, the combination with one of said die bars, of a slidable lock block mounted therein and adapted to engage with an aperture in the co-operating die bars, and means for moving said lock block into and out of engagement with said second named die bar.

2. The combination with a die bar of a machine for making shingles, of a co-operating bar, a slidably mounted lock block carried by one of said bars and adapted to engage with an aperture in the other of said bars, and means for moving said lock block into and out of engagement with said die 3. The combination with a travelling die bar and a co-operating travelling die bar, of a lock block slidably mounted in said first named bar, and a cam adapted to move said lock block into engagement with said second named bar, and retract said lock block from engagement with said second named bar after said two bars have travelled a predetermined distance.

4. In a machine for making shingles the combination of an endless travelling chain, die bars carried by said chain, a second endless chain, die bars carried by said second endless chain, means for driving said two endless chains so as to bring said die bars in co-operative relation, a lock block carried by each of said bars on one of said chains, and means for engaging each of said lock blocks with an aperture in the co-operating bar of the set carried by the other of sai chains, and means for disengaging said engagement after said bars have travelled in a locked position through a predetermined distance.

5. In a machine or making shingles'the combination of an upper travelling chain, a lower travelling chain, lock bars carried by each of said chains, means for driving said chains so that corresponding bars on upper and lower chains will meet and travel together through a predetermined distance,

and rotatably engageable means for locking said bars together during a portion of their travel.

6. in a machine for making shingles the combination of a frame, an endless chain mounted for straight line travel through a predetermined distance supported by said frame, an upper endless chain likewise mounted for straight line travel through a predetermined distance, said upper chain being offset longitudinally with respect to said lower chain so that a portion of said upper chain overhangs said lower chain, and a portion of said lower chain extends beyond said upper chain, and slidably engageable means for locking co-operating bars together through a portion of their straight line travel.

7. In a machine for making shingles the combination of a frame, a sprocket wheel rotatably supported by said frame, a second sprocket wheel likewise rotatably supported by said frame, a sprocket chain engaging said sprocket wheels, die bars carried by said sprocket chain, the supporting means of said die bars of said chains forming one of the roller members of said chain, that ortion of said die bar above said chain an extending to one side from the roller member being bevelled 01? to allow the tipping of the bar in that direction only.

8. The combination with co-operative travelling die bars having 'll' slot apertures near the end thereof, of lock blocks each rotatably mounted in the apertures of one set of said co-operating bars and adapted to engage in the T shaped apertures of the other set of co-operating bars, and means for moving said blocks into and out of engagement with said apertures.

sntas M. roan. 

